Fluorescence energy transfer in quantum dot/azo dye complexes in polymer track membranes
Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Kronverkskiy pr, Saint Petersburg 197101, Russia
Nanoscale Research Letters 2013, 8:452 doi:10.1186/1556-276X-8-452Published: 31 October 2013
Fluorescence resonance energy transfer in complexes of semiconductor CdSe/ZnS quantum dots with molecules of heterocyclic azo dyes, 1-(2-pyridylazo)-2-naphthol and 4-(2-pyridylazo) resorcinol, formed at high quantum dot concentration in the polymer pore track membranes were studied by steady-state and transient PL spectroscopy. The effect of interaction between the complexes and free quantum dots on the efficiency of the fluorescence energy transfer and quantum dot luminescence quenching was found and discussed.